A285505 - OEIS

A285505

Positions of 0 in A285504; complement of A285506.

5, 6, 9, 10, 17, 18, 21, 22, 29, 30, 33, 34, 41, 42, 45, 46, 49, 50, 53, 54, 57, 58, 61, 62, 69, 70, 73, 74, 81, 82, 85, 86, 89, 90, 93, 94, 97, 98, 101, 102, 109, 110, 113, 114, 121, 122, 125, 126, 133, 134, 137, 138, 145, 146, 149, 150, 157, 158, 161, 162

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Conjecture: a(n)/n -> (3+sqrt(5))/2.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000

EXAMPLE

As a word, A285504 = 11110011001..., in which 0 is in positions 5,6,9,10,...

MATHEMATICA

s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {0, 0, 1, 1}}] &, {0}, 8] (* A285501 *)

Flatten[Position[s, 0]] (* A285502 *)